2009 pontiac g8 gt speed limiter

Evil8 · Post by **Evil8** » Sat Jan 14, 2012 3:48 pm

Im having trouble removing the speed limiter, the car shuts down at 138mph, Ive tried several times but i cant seem to actually fix this. The car is still pulling hard up until that point and my only other current mods are a cold air intake and cat back exhaust. thanks

johan · Post by **johan** » Mon Jan 16, 2012 8:06 pm

Give the attached file a shot, please let us know if this works. Speed limit set to 199mph, you should also press "yes" to reset the parameters when you install this as whatever you had changed is applied here already.

Evil8 · Post by **Evil8** » Tue Jan 17, 2012 12:07 pm

ill let you know in a few days if it is resolved. thanks

Evil8 · Post by **Evil8** » Fri Jan 20, 2012 1:45 pm

shuts down at the same speed still.

BIGDADDY1969 · Post by **BIGDADDY1969** » Mon Jan 23, 2012 2:39 am

Same issue with my 08 G8-GT....Lew tried a few times in my Diablew Custom tunes as well as trying to set it myself to no avail...i hate beating cars badly and then get passed on top end when i "cut-out" @138

Mike_Levy · Post by **Mike_Levy** » Mon Jan 23, 2012 12:36 pm

When/where do you ever get a chance to go over 138mph anyway?

Post by **mikel** » Mon Jan 23, 2012 12:37 pm

I'm bringing a G8 in on Thursday to get to the bottom of this...

Post by **06MonteSS** » Mon Jan 23, 2012 2:36 pm

yeah, the G8's are hokey...

BIGDADDY1969 · Post by **BIGDADDY1969** » Mon Jan 23, 2012 3:33 pm

Im in the country/swamp lol in south Louisiana and theres several long striaights right around my home you can open up real good ..

.... Me and my nephew run at it whenever i change something lol...he has a 350Z that used to stay pretty close behind me but cant pass til i cut out..... then i got Trinity and Lews tunes and hes waaaaaayyyy back now lol . but can pass on top end uggggghhhh so i usually just let off and call it by then so i dont get trumped by his nonlimited top end ... that lil nissan got hell of a top end....

Post by **06MonteSS** » Mon Jan 23, 2012 4:08 pm

waaaaaaayyyyyyyyy back there now, haha

BIGDADDY1969 · Post by **BIGDADDY1969** » Tue Jan 24, 2012 1:22 am

Yup Lew hes a dot in my mirror now lol .. Dont need more than 138 BUUUTTT it wud be nice to so he widnt show bak up lol ..

Evil8 · Post by **Evil8** » Sat Feb 04, 2012 1:07 am

BIGDADDY1969 wrote:Yup Lew hes a dot in my mirror now lol .. Dont need more than 138 BUUUTTT it wud be nice to so he widnt show bak up lol ..

that would suck, blowing their doors off and having them walk and pass you later..

Post by **mikel** » Mon Feb 06, 2012 12:22 pm

we figured this out...anyone else still need a fix?

post backup and last tune written please.

Evil8 · Post by **Evil8** » Tue Feb 07, 2012 8:33 pm

info you needed

Post by **mikel** » Wed Feb 08, 2012 10:59 am

Evil8 wrote:info you needed

this should do it